[Aiken]

Total Commander (shareware) - mega file manager, dual pane.
Servant Salamander (free and shareware) - so-so, dual pane.
FAR (OSS, free) - powerful FM without graphic gui for CLI lovers, dual pane.
Xplorer2 - (shareware) - very good and lightweight FM, dual pane, single pane(explorerish).
Directory Opus (shareware) - very good but heavy (in terms of RAM usage) FM, dual pane, single pane(explorerish).